A western Pennsylvania man has been convicted in the sale of fentanyl-laced heroin used in a woman's fatal overdose nearly three years ago.

The Pittsburgh Tribune-Review reports that jurors in Westmoreland County deliberated for four hours Friday before convicting 21-year-old Demetrius Houser of five felony drug-related charges, including drug delivery resulting in death.

Prosecutors alleged that Houser was the main dealer who supplied the drug mixture that 32-year-old Christina Donati-Racioppo used before her January 2014 death.

Defense attorney Brian Aston argued there was little proof that the fatal dose came from Houser. He also said prosecution witnesses had lied to authorities earlier. Aston said his client was disappointed by the verdict and added that there were "no winners here today."